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Module 6: Acid/Base Reactions
Quick questions on Enthalpy of neutralisation and calorimetry explained: HSC Chemistry Module 6
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is sources of error?Show answer
To reduce these errors, use a stirred, insulated calorimeter, a graphed temperature-time correction, and equal initial temperatures for the two reactants.
What is q1?Show answer
Define the enthalpy of neutralisation and state its standard value for a strong acid and strong base. [2 marks]
What is q2?Show answer
50.0 mL of 0.500 mol L HCl is mixed with 50.0 mL of 0.500 mol L NaOH. The temperature rises by 3.40 degrees C. Calculate of neutralisation.
What is q3?Show answer
Account for the following observations: (a) the enthalpy of neutralisation for HF + NaOH is kJ mol, more exothermic than the strong-strong value. (b) The enthalpy for + NaOH is kJ mol, less exothermic than the strong-strong value. (c) State one source of error in a polystyrene-cup calorimeter.
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